ED and all.

Ran up to 6300 revs (approx= ) and=20 the fuel flow was showing 14.1 GPH at 14 A/F ratio. Not sure that the= fuel=20 flow is correct as has not been set yet. This is Tracy=E2=80=99s standard s= etting so=20 far. Engine is lumpy under 1800 rpm and has its moments until o= ver=20 3000 rpm when everything acts normally. Suspect that part of the blame may = be=20 the slide throttle. Have 6.5 hours on the ground so far and will chec= k for=20 another few hours yet. Full noise gives an EGT of 1770, so will have = to up=20 the alarm limit to 1800. Finally fixed all the oil and water leaks. A= ny=20 advice re what to check next before take off ? Neil.

From: Stephen Izett

Sent: Thursday, August 23, 2012 9:21 AM

To: Rotary motors in aircraft <= /DIV>

Subject: [FlyRotary] Re: Prop revs

Hi= =20 Ed=20

Thanks for the offer but I'm not flying yet.

Hopefully early next year.

Steve Izett

Glasair SIIRG Renesis 4 port RD1C EC2 EM3

On 22/08/2012, at 8:51 PM, Ed Anderson wrote:

Steve, if you give me the fuel flow you are seein= g at=20 6300 rpm and manifold pressure, I can give you a pretty good estimate fro= m my=20 spreadsheet of what power you are producing. Also should you happen= to=20 have the Air/Fuel ratio that would be a plus but not essential.

Ed

From: Stephen Izett

Sent: Tuesday, August 21, 2012 7:23 PM

To: Rotary motors in aircraft=

Subject: [FlyRotary] Re: Prop revs

Thanks Ed=20
I've wondered what my Renesis 4 port with a good intake manifold and= in=20 flight adjustable prop will produce.

So on a cold day she will hopefully still breath to 7250RPM and mayb= e=20 approach 200HP?

Cheers

Steve Izett

On 21/08/2012, at 11:40 PM, Ed Anderson wrote:

Steve,

On a cold morning when I can see 19-20 gph on t= ake off=20 at 6200 rpm, I calculate based on fuel burn rate and an air/fuel ratio = of=20 12.65:1 that I am probably producing around 180-185 HP. On hot da= ys=20 based on fuel burn of 16.5-17.0 GPH, I calculate around 165-170=20 HP.

The fastest I've ever had the Rv-6A was 200 mph= TAS=20 burning round 13.25-14.5 GPH.

But, none of this was done on a dyno - its base= d on=20 fuel burn and rpm and we all know a rotary can pass through more = fuel=20 than is producing power. Anyhow, it=E2=80=99s the best estimate I= have. =20

Ed

From: Stephen Izett

Sent: Tuesday, August 21, 2012 10:31 AM

To: Rotary motors in aircraft=20

Subject: [FlyRotary] Re: Prop revs

Ed=20

Out of interest, what do you think you are getting in HP from your= 13B=20 and at what RPM?

Steve Izett

On 21/08/2012, at 9:15 PM, Ed Anderson wrote:

I would say you have winner. Does= of=20 course depend on what prop load you were pulling during static run.= =20

I have a fixed pitch 74x88 and a well-tuned o= lder=20 13B and the best I have ever got static - was 6200 rpm on a cold=20 day. Normally, I get 6000-6100 rpm.

So depending on your prop, it looks like you = are=20 doing great for static rpm.

Ed

From: Neil=20 Unger

Sent: Monday, August 20, 2012 9:48 PM

To: Rotary motors in aircraft= =20

Subject: [FlyRotary] Prop revs

No virus found in th= is=20 message.
Checked by AVG - www.avg.com
Version: 2012.0.2197 = / Virus=20 Database: 2437/5211 - Release Date: 08/20/12

No virus found in this= =20 message.
Checked by AVG - www.avg.com
Version: 2012.0.2197 / = Virus=20 Database: 2437/5212 - Release Date: 08/20/12

No virus found in this= =20 message.
Checked by AVG - www.avg.com
Version: 2012.0.2197 / Vi= rus=20 Database: 2437/5217 - Release Date: 08/22/12